Qualification > Math
IGCSE MATHS Doubts
Dr.virus007™:
sequence formulas ....a+(n-1)d where 'a' is the first no. and 'd' is the common difference but whatz the formula for uncommon differences like 1^3^5^7^9.....plz help...
Candela:
--- Quote from: princess12 on May 18, 2010, 08:50:45 pm ---a+ (n-1) d
WHAT IS A N D
--- End quote ---
a- the first term in d sequence.
n- nth term
d- the difference btween the terms!
i dont knw the other formulae for sequences?!anyone?!
princess12:
can any 1 explain us the bearing in briefly please
??? ??? ??? ??? ??? ??? ??? ??? ??? ??? ??? ??? ??? :'( :'( :'( :'( :'( :'( :'( :'( :'( ??? ??? ??? ??? ??? ??? ??? ??? :'( :'( :'( :'( :'( :'(
Shazizzzle:
--- Quote from: princess12 on May 18, 2010, 09:04:21 pm ---can any 1 explain us the bearing in briefly please
fast urgent please
--- End quote ---
Suppose, bearing A from B.
A FROM B
So, at point B, you draw a north.
The angle from the North of B, in between that north and line joining B to A, is the bearing.
The bearing is always taken from the north, in CLOCKWISE DIRECTION, and is always written in THREE DIGITS.
e.g 030 deg.
6394:
--- Quote from: Candela on May 18, 2010, 09:04:00 pm ---a- the first term in d sequence.
n- nth term
d- the difference btween the terms!
i dont knw the other formulae for sequences?!anyone?!
--- End quote ---
i need sequence formulas as wel
Thanks alot :) :D
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